Data tool

YAML/JSON converter

Convert pasted JSON to YAML, or YAML to formatted JSON. Everything runs in your browser.

Input

Source text

Paste JSON or YAML

Output

Converted text

Convert API examples, static site config snippets, small localization blocks, or documentation samples between JSON and YAML.

Invalid input leaves the output blank and shows a text error message near the controls, including parser details when available.

This v1 handles pasted text only. It does not upload files, preserve comments when converting YAML to JSON, or validate against a schema.

Conversion happens in the browser. Pasted JSON and YAML are not sent to a server by this page.